They really screw-up the upper mids and highs. In my opinion what makes a good cable is: 1. Good connectors on both the AC plug side and IEC 2. Proper assembly 3. Adequet cable gauge with good shielding Also upgrade your outlets with a good Pass & Seymour 5242 or 5252 Spec grade outlet. You don't need to spend a lot of money. The Pass & Seymour outlets are less than $10.00 and the cable I would recommend is less than $50.00.
